Related Clues:

• Like some limericks
• Stage of growth
• R-rated, say
• Majority member?
• Full-grown
• Kind of education
• 18-and-over
• Grown up
• Grown-up
• Beyond off-color
• Full-price payer
• Voter, e.g.
• One old enough to know better
• Not clean
• Indecent companion